diff --git a/CMakeLists.txt b/CMakeLists.txt
index 96e3f67..e4bbf72 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,14 +30,16 @@ function(add_shaders TARGET)
 endfunction()
 
 add_executable(vk_expe
+    src/core/math.cpp
+    src/core/utils.cpp
+    src/core/Logger.cpp
+
     src/vk/Context.cpp
     src/vk/Swapchain.cpp
     src/vk/Memory.cpp
     src/vk/Buffer.cpp
     src/main.cpp
-    src/utils.cpp
     src/Simplex.cpp
-    src/Logger.cpp
     src/Planet.cpp
     src/VkExpe.cpp
     src/VulkanTutorial.cpp
diff --git a/src/Planet.cpp b/src/Planet.cpp
index a7b803d..37fb79e 100644
--- a/src/Planet.cpp
+++ b/src/Planet.cpp
@@ -1,6 +1,7 @@
 
 #include <Planet.h>
-#include <Logger.h>
+
+#include <core/Logger.h>
 
 #include <cassert>
 #include <vector>
diff --git a/src/Planet.h b/src/Planet.h
index 12aaf28..1a7b96b 100644
--- a/src/Planet.h
+++ b/src/Planet.h
@@ -1,6 +1,7 @@
 #pragma once
 
-#include <core.h>
+#include <core/math.h>
+#include <core/ArrayView.h>
 
 #include <memory>
 #include <cassert>
diff --git a/src/Simplex.h b/src/Simplex.h
index f1e7b91..4501bc2 100644
--- a/src/Simplex.h
+++ b/src/Simplex.h
@@ -1,6 +1,7 @@
 #pragma once
 
-#include <core.h>
+#include <core/math.h>
+#include <core/ArrayView.h>
 
 
 class Simplex {
diff --git a/src/VkExpe.cpp b/src/VkExpe.cpp
index 08b0948..448fdef 100644
--- a/src/VkExpe.cpp
+++ b/src/VkExpe.cpp
@@ -1,7 +1,7 @@
 #include <VkExpe.h>
 
-#include <utils.h>
-#include <Logger.h>
+#include <core/utils.h>
+#include <core/Logger.h>
 
 #include <stdexcept>
 #include <iostream>
diff --git a/src/VkExpe.h b/src/VkExpe.h
index be26486..e36371b 100644
--- a/src/VkExpe.h
+++ b/src/VkExpe.h
@@ -1,8 +1,9 @@
 #pragma once
 
-#include <core.h>
 #include <VulkanTutorial.h>
 
+#include <core/math.h>
+
 #include <SDL2/SDL.h>
 
 #include <memory>
diff --git a/src/VulkanTutorial.cpp b/src/VulkanTutorial.cpp
index d4bb49a..0438ac0 100644
--- a/src/VulkanTutorial.cpp
+++ b/src/VulkanTutorial.cpp
@@ -1,9 +1,10 @@
 #include <VulkanTutorial.h>
 
-#include <utils.h>
-#include <Logger.h>
 #include <Planet.h>
 
+#include <core/utils.h>
+#include <core/Logger.h>
+
 #include <SDL2/SDL_vulkan.h>
 
 #include <Eigen/Geometry>
diff --git a/src/VulkanTutorial.h b/src/VulkanTutorial.h
index 900476d..fc86fe6 100644
--- a/src/VulkanTutorial.h
+++ b/src/VulkanTutorial.h
@@ -1,14 +1,17 @@
 #pragma once
 
-#include <core.h>
-
 #include <vk/Context.h>
 #include <vk/Swapchain.h>
 #include <vk/Buffer.h>
 
+#include <core/math.h>
+
 #include <SDL2/SDL.h>
+
 #include <vulkan/vulkan.h>
+
 #include <Eigen/Dense>
+
 #include <vector>
 #include <chrono>
 
diff --git a/src/core.h b/src/core/ArrayView.h
similarity index 58%
rename from src/core.h
rename to src/core/ArrayView.h
index 892daeb..9ee4b30 100644
--- a/src/core.h
+++ b/src/core/ArrayView.h
@@ -1,51 +1,7 @@
 #pragma once
 
 
-#include <Eigen/Dense>
-
-#include <type_traits>
-
-
-using Byte = unsigned char;
-using Index = uint32_t;
-
-using Real = float;
-
-using Vector2 = Eigen::Matrix<Real, 2, 1>;
-using Vector3 = Eigen::Matrix<Real, 3, 1>;
-using Vector4 = Eigen::Matrix<Real, 4, 1>;
-
-using Matrix2 = Eigen::Matrix<Real, 2, 2>;
-using Matrix3 = Eigen::Matrix<Real, 3, 3>;
-using Matrix4 = Eigen::Matrix<Real, 4, 4>;
-
-using Transform = Eigen::Transform<Real, 3, Eigen::Affine>;
-using AngleAxis = Eigen::AngleAxis<Real>;
-using Quaternion = Eigen::Quaternion<Real>;
-
-using Triangle = Eigen::Array<Index, 3, 1>;
-
-
-template<typename Scalar, typename Derived0, typename Derived1>
-auto lerp(
-    Scalar factor,
-    const Eigen::MatrixBase<Derived0>& m0,
-    const Eigen::MatrixBase<Derived1>& m1
-) -> std::enable_if_t<
-    Derived0::RowsAtCompileTime == Derived1::RowsAtCompileTime &&
-    Derived0::ColsAtCompileTime == Derived1::ColsAtCompileTime,
-    Eigen::Matrix<
-        std::common_type_t<
-            Scalar,
-            typename Derived0::Scalar,
-            typename Derived1::Scalar
-        >,
-        Derived0::RowsAtCompileTime,
-        Derived0::ColsAtCompileTime
-    >
-> {
-    return (Scalar(1) - factor) * m0 + factor * m1;
-}
+#include <core/types.h>
 
 
 template<typename T>
diff --git a/src/Logger.cpp b/src/core/Logger.cpp
similarity index 95%
rename from src/Logger.cpp
rename to src/core/Logger.cpp
index 7d76816..230e85a 100644
--- a/src/Logger.cpp
+++ b/src/core/Logger.cpp
@@ -1,4 +1,4 @@
-#include <Logger.h>
+#include <core/Logger.h>
 
 #include <iostream>
 
diff --git a/src/Logger.h b/src/core/Logger.h
similarity index 100%
rename from src/Logger.h
rename to src/core/Logger.h
diff --git a/src/utils.cpp b/src/core/math.cpp
similarity index 68%
rename from src/utils.cpp
rename to src/core/math.cpp
index bfa7670..7e23ff9 100644
--- a/src/utils.cpp
+++ b/src/core/math.cpp
@@ -1,28 +1,5 @@
-#include <utils.h>
+#include <core/math.h>
 
-#include <cstring>
-#include <fstream>
-
-
-Uuid make_uuid(uint8_t const* bytes) {
-    Uuid uuid;
-    std::memcpy(uuid.data(), bytes, UUID_SIZE);
-    return uuid;
-}
-
-std::vector<char> read_binary_file(const char* path) {
-    std::ifstream istream(path, std::ios_base::ate | std::ios_base::binary);
-    if(!istream.is_open())
-        throw std::runtime_error(cat("failed to open '", path, "'"));
-
-    std::vector<char> buffer(size_t(istream.tellg()));
-
-    istream.seekg(0);
-    istream.read(buffer.data(), buffer.size());
-    istream.close();
-
-    return buffer;
-}
 
 Eigen::Matrix4f projection_matrix(float x_min, float x_max, float y_min, float y_max, float z_min, float z_max) {
     auto const cx = x_max + x_min;
diff --git a/src/core/math.h b/src/core/math.h
new file mode 100644
index 0000000..ae9efce
--- /dev/null
+++ b/src/core/math.h
@@ -0,0 +1,54 @@
+#pragma once
+
+
+#include <core/types.h>
+
+#include <Eigen/Dense>
+
+#include <type_traits>
+
+
+using Real = float;
+
+using Vector2 = Eigen::Matrix<Real, 2, 1>;
+using Vector3 = Eigen::Matrix<Real, 3, 1>;
+using Vector4 = Eigen::Matrix<Real, 4, 1>;
+
+using Matrix2 = Eigen::Matrix<Real, 2, 2>;
+using Matrix3 = Eigen::Matrix<Real, 3, 3>;
+using Matrix4 = Eigen::Matrix<Real, 4, 4>;
+
+using Transform = Eigen::Transform<Real, 3, Eigen::Affine>;
+using AngleAxis = Eigen::AngleAxis<Real>;
+using Quaternion = Eigen::Quaternion<Real>;
+
+using Triangle = Eigen::Array<Index, 3, 1>;
+
+
+template<typename Scalar, typename Derived0, typename Derived1>
+auto lerp(
+    Scalar factor,
+    const Eigen::MatrixBase<Derived0>& m0,
+    const Eigen::MatrixBase<Derived1>& m1
+) -> std::enable_if_t<
+    Derived0::RowsAtCompileTime == Derived1::RowsAtCompileTime &&
+    Derived0::ColsAtCompileTime == Derived1::ColsAtCompileTime,
+    Eigen::Matrix<
+        std::common_type_t<
+            Scalar,
+            typename Derived0::Scalar,
+            typename Derived1::Scalar
+        >,
+        Derived0::RowsAtCompileTime,
+        Derived0::ColsAtCompileTime
+    >
+> {
+    return (Scalar(1) - factor) * m0 + factor * m1;
+}
+
+Eigen::Matrix4f projection_matrix(float x_min, float x_max, float y_min, float y_max, float z_min, float z_max);
+Eigen::Matrix4f look_at_matrix(
+    const Eigen::Vector3f& cam_pos,
+    const Eigen::Vector3f& look_at,
+    const Eigen::Vector3f& up
+);
diff --git a/src/core/types.h b/src/core/types.h
new file mode 100644
index 0000000..f26c2a8
--- /dev/null
+++ b/src/core/types.h
@@ -0,0 +1,10 @@
+#pragma once
+
+
+#include <Eigen/Dense>
+
+#include <type_traits>
+
+
+using Byte = unsigned char;
+using Index = uint32_t;
diff --git a/src/core/utils.cpp b/src/core/utils.cpp
new file mode 100644
index 0000000..c1d5a66
--- /dev/null
+++ b/src/core/utils.cpp
@@ -0,0 +1,26 @@
+#include <core/utils.h>
+
+#include <cstring>
+#include <fstream>
+
+
+Uuid make_uuid(uint8_t const* bytes) {
+    Uuid uuid;
+    std::memcpy(uuid.data(), bytes, UUID_SIZE);
+    return uuid;
+}
+
+std::vector<char> read_binary_file(const char* path) {
+    std::ifstream istream(path, std::ios_base::ate | std::ios_base::binary);
+    if(!istream.is_open())
+        throw std::runtime_error(cat("failed to open '", path, "'"));
+
+    std::vector<char> buffer(size_t(istream.tellg()));
+
+    istream.seekg(0);
+    istream.read(buffer.data(), buffer.size());
+    istream.close();
+
+    return buffer;
+}
+
diff --git a/src/utils.h b/src/core/utils.h
similarity index 83%
rename from src/utils.h
rename to src/core/utils.h
index 4c00743..8b56d2b 100644
--- a/src/utils.h
+++ b/src/core/utils.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include <Eigen/Dense>
-
 #include <cassert>
 #include <vector>
 #include <string>
@@ -33,6 +31,7 @@ Guard<T> make_guard(T&& teardown) {
     return Guard<T>(std::move(teardown));
 }
 
+
 template<typename... Args>
 std::string cat(Args&&... args) {
     std::ostringstream ostream;
@@ -40,8 +39,10 @@ std::string cat(Args&&... args) {
     return ostream.str();
 }
 
+
 std::vector<char> read_binary_file(const char* path);
 
+
 template<typename T>
 class Array {
 public:
@@ -76,10 +77,3 @@ private:
     size_t m_size = 0;
     T* m_data = nullptr;
 };
-
-Eigen::Matrix4f projection_matrix(float x_min, float x_max, float y_min, float y_max, float z_min, float z_max);
-Eigen::Matrix4f look_at_matrix(
-    const Eigen::Vector3f& cam_pos,
-    const Eigen::Vector3f& look_at,
-    const Eigen::Vector3f& up
-);
diff --git a/src/main.cpp b/src/main.cpp
index 2a541b1..f29c4e7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,7 @@
-#include <Logger.h>
 #include <VkExpe.h>
 
+#include <core/Logger.h>
+
 
 int main(int argc, char** argv) {
     VkExpe vk_expe(argc, argv);
diff --git a/src/vk/Buffer.cpp b/src/vk/Buffer.cpp
index bd72ba9..df291d7 100644
--- a/src/vk/Buffer.cpp
+++ b/src/vk/Buffer.cpp
@@ -1,6 +1,7 @@
 #include <vk/Buffer.h>
 #include <vk/Context.h>
-#include <Logger.h>
+
+#include <core/Logger.h>
 
 #include <stdexcept>
 #include <algorithm>
diff --git a/src/vk/Buffer.h b/src/vk/Buffer.h
index e6f8e88..5782ea7 100644
--- a/src/vk/Buffer.h
+++ b/src/vk/Buffer.h
@@ -1,10 +1,10 @@
 #pragma once
 
-#include <utils.h>
-
 #include <vk/forward.h>
 #include <vk/Memory.h>
 
+#include <core/utils.h>
+
 #include <vulkan/vulkan.h>
 
 #include <memory>
diff --git a/src/vk/Context.cpp b/src/vk/Context.cpp
index 660cc77..c475162 100644
--- a/src/vk/Context.cpp
+++ b/src/vk/Context.cpp
@@ -1,8 +1,8 @@
 #include <vk/Context.h>
 #include <vk/Memory.h>
 
-#include <utils.h>
-#include <Logger.h>
+#include <core/utils.h>
+#include <core/Logger.h>
 
 #include <SDL2/SDL_vulkan.h>
 
diff --git a/src/vk/Context.h b/src/vk/Context.h
index b9762f3..63c4faf 100644
--- a/src/vk/Context.h
+++ b/src/vk/Context.h
@@ -1,10 +1,12 @@
 #pragma once
 
-#include <utils.h>
-#include <Logger.h>
 #include <vk/forward.h>
 
+#include <core/utils.h>
+#include <core/Logger.h>
+
 #include <SDL2/SDL.h>
+
 #include <vulkan/vulkan.h>
 
 #include <optional>
diff --git a/src/vk/Swapchain.cpp b/src/vk/Swapchain.cpp
index e4e8be5..da07eba 100644
--- a/src/vk/Swapchain.cpp
+++ b/src/vk/Swapchain.cpp
@@ -1,6 +1,6 @@
 #include <vk/Swapchain.h>
 
-#include <Logger.h>
+#include <core/Logger.h>
 
 #include <SDL2/SDL_vulkan.h>
 
diff --git a/src/vk/Swapchain.h b/src/vk/Swapchain.h
index d3bf520..736de04 100644
--- a/src/vk/Swapchain.h
+++ b/src/vk/Swapchain.h
@@ -1,9 +1,11 @@
 #pragma once
 
 #include <vk/Context.h>
-#include <utils.h>
+
+#include <core/utils.h>
 
 #include <SDL2/SDL.h>
+
 #include <vulkan/vulkan.h>
 
 #include <optional>